I have a Pumpkin that is about 60-70 lbs. I'm not sure what kind (Big Max, Prize Winner) something like that. It seems to be partially ripened. It is somewhere between the Yellow that it started and The orange it will become. The vine has really slowed down in its growing. is there anything I can do to make this pumpkin bigger? If so? What? If not? how long should I keep it on the vine? It is in a very dry place. I don't believe it will rot in it's current position.

thanx, Andy